Steve Ballmer faced a lot of criticism as CEO and he would get confused because he was bringing in a lot of revenue. A company is supposed to make money, right?
But he was not innovating. All the new products were coming from elsewhere. He did manage to buy Skype though.
Tim Cook has been toying with the dimensions of the various Apple products, and he has been bringing in a lot of money.
Is that a warning sign?
http://venturebeat.com/2016/10/25/why-tim-cook-is-steve-ballmer/
Why Tim Cook is Steve Ballmer | VentureBeat | Business | by Steve Blank